Read the excerpt from Roll of Thunder, Hear My Cry. I had gotten as far west as the Dakotas when my silent recitation was disturbed by a tapping on the porch. I lay very still. Mr. Morrison never made sounds like that. Which detail from the excerpt best helps the reader determine a tone of alarm? I had gotten as far west as the Dakotas my silent recitation a tapping on the porch Mr. Morrison never made sounds like that.